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Master's MateSafety Initiative Network
The Master's Mate Safety Initiative Network (MMSIn) — like AAA for the ocean, but free & community-driven. Cruisers keeping each other safe: anchor-drag & distress alerts, a verified captains directory, and a watch network that has your back.
Passenger (Uninspected)

FINE LINE

U.S. Official No. 531993

Not yet on Master's Mate
Type
Passenger (Uninspected)
Flag
USAUSA
Length
11.7 m
Beam
4.6 m
Draft
2 m
First reported
Jun 2026
AIS reports
1

On the American registry, FINE LINE is an 11.7-metre ferry vessel. Her hull carries 4.6 metres in the beam and a draft of 2 m. Officially she's U.S. official number 531993. For a boat that carries people, FINE LINE can lean on the Master's Mate Safety Initiative Network — free distress alerting and a fleet that's paying attention.

Free forever · No credit card · for passenger & charter operators

Keep every soul aboard FINE LINE safe.

Distress alerting, live AIS, onboard monitoring and weather routing — the safety stack for boats that carry people.

Switch on the safety stack — free →

Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers

Wherever FINE LINE roams, you're never out there alone.
Thousands of cruisers on the Master's Mate Network — ready to help the moment something goes wrong.
Free with your claim · for passenger & charter operators

The most powerful cruising platform ever built — yours, free.

Joining the Safety Initiative Network doesn't just put FINE LINE on the map. It hands you the full bridge:

Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Anchor Watch
GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim FINE LINE and switch it all on
Free to join · nothing to install to start · cancel anytime
Claim free → unlock everything

About FINE LINE

What kind of vessel is FINE LINE?
FINE LINE is a Passenger (Uninspected) flagged to United States of America.
What is FINE LINE's U.S. Official No.?
FINE LINE's U.S. Official No. is 531993.
How big is FINE LINE?
FINE LINE is about 11.7 m long, 4.6 m on the beam, drawing 2 m.
Is FINE LINE on the Master's Mate Safety Initiative Network?
Not yet. If FINE LINE is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).

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